Flow controller



EIB, w25.

jam.

M. M* EORDEN FLO?! CONTROLLER Filed Sept.

/ 44a/C Y/// 1f Application lied September 21922. Seria Ito. 536,894.

To all whom 'it may conceive:

Be it 1irnewn that l, Mone Bosnien, a. citizen of tue United States, residing` at Collingswood, in the county ci Camden and State oit liew Jersey, have invented certain improvements in Flow Controllers, of which vthe 'following is speciiication..

This invention is an automatic mechanism for regulating the flow oi: liquids through conduits to predetermined rates and its primary object is to secure automatically the desired predetermined rate oi: tiow by simple means that are readily adjustable and re liable in operation in response to variafitions in the head inducing the dow.,

` improved mechanism, inthe preferred construction, is applied to a conduit which is provided with a contracted or Venturi section hafir a butto" 'f Valve therein, in couiliination n th a shell vided by a diaphragm into chambers connected respectively with conduit se "Lions ot di'lifercnt diameters and a lever mechanism icfl to th faire at the anis thereof, with which lever mechanism the diaphragm and a variable liquid counter weight are connected in counter acting relation so that as the pressures in the chambers change with changes the rate ot flow t ie diaphragm will be moved by the resultant to adjust the valve, restricting the passage con trolled thereby as the difference in pressures increases and enlarging such passage as this difference decreases.

ln the accompanying drawings, Fig. l is a broken side View of mechanism embodying my improvements, and Fig. 2 is a fragmentary plan View .illustrating details shown in Fig. l with the throat ot the contracted section broken away.

The mechanism illustrated to show a pre- 'ici-red application of the invention comprises a conduit having a Venturi section l between the normal sections 2. rlhe Venturi section has in its throat the valve case 3 containing the butterfly valve adapted to oscillate on a horizontal axis, the trunnions 5 of the valve being journalled in the bearings 6 on the case. "A sheave 7 is fixed to one of these trunnions and counterbalancing sheaye segment 8 and 8 are fixed similarly to the other trunnion.

t shell 9 contains a diaphragm i0 which divides it into compartments il and l2, These compartments are connected bythe respective pipes 13 and i4 with the section l5 and the smaller section lt of the conduit. The diaphragm is connected at its center with a stem 19 which passes through a stuffing' bei; 20 of' the shell to a coi'inection with cord or strap 2l passing over and iixed to Jhe sheaye 7.

, .al vessel 22 is suspended h v a cord or sti-ai 23 from the sheave section 8 so counter to the weight carried by the cord 21, 'the vessel being provided with a. Lgraduated glass 24 to show the depth ci a Vlii'iuiil therein.

operation, the vessel will he nro vided with the amount of iiquid, indicated hy the gage, that required to hold the valve -lv in the desired position, against 'the coi. action of the diaphragm l0 and its conne'. tions when the liquid in the conduit is not 'flowing or there is no draft on the contents oi' the filled conduit. W hen there a draft made on 'the liquid, the resultingr flow causes unequal pressures to exerted in 'the climbers il and i2., the -pressure communicated i'roin the section l5 being' greater than that communicated itrom the section l@ and the dili'erence increasing,- with the Yvelocity 0i flow or the increase in the head.

Having described my invention, l claim:

ln a flow controller, the. combination with a conduit and a butteriiy ralve therein, ot sheave in chanisms connected with ysaid valve to eect adjustments thereof, mechanism comprising a diaphragm connected 1. il i,

' with one of said sheare mechanisms, a vessel adapted for holding and indicating a quantity of liquid connected with the other of said shcave mechanisms in counterbalancing relation to said diaphragm, and means for producing` di ierential pressures from the Huid iowing in said conduit and Variable therewith and applying said pressures to the opposite sides of said diaphragm whereby said valve is adjusted.

ln testimony whereof l have hereunto set my name this 31st day o August, 1922.

MGR() M. BORDEN. 

